Chip-scale thermal energy harvester using Bi2Te3

2015 
Chip-scale thermoelectric energy harvester designs based on Bi2Te3 are presented with a focus on improving power density per device area for applications exchanging heat with ambient air through a heat sink. Practical vacuum capping is found to be beneficial for improving energy density despite the additional shunt created by the bonding ring around the 10mm2 harvester chip. Optimized device performance is predicted to significantly exceed that of commercially available devices with much lower thermoelectric leg length.
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